Saw-spacing device.



Patented Sept. 2, 19012; F. YDST.

e w a v SAW SPACING DEVICE. (Application filed Feb. 10, 1902.)

'( No Modem UNTTED STATES PATENT Orrice.

FRANK YOST, OF LORAIN, OHIO.

SAW-SPACING DEVICE.

SITEGII'E'IGATION forming part of Letters Patent No. 708,450, dated September 2, 1902. Application filed February 10, 1902. Serial No. 93,414. (No model.)

To all whom, it may concern.-

Be it known that I, FRANK YOST, a resident of Lorain, in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Saw-Spacing Devices; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to improvements in wedges, and especially to the class of devices used in spacing saws in gang-frames forstonesawing machines.

The object of this invention is to provide an adjustablewedge or saw-spacing device in order that the same wedge or device may be used while varying the distance between the saws composing the gang.

A further object of my invention is to provide a deviceof the character indicated by means of which the saws composing the gang can be spaced with greater accuracy than is possible with the devices now in use.

With these objects in view my invention consists in providing a wedge or spacing device the dimensions of which maybe increased or decreased, as desired.

My invention further consists in the peculiar features of construction and combination of parts, as illustrated in the drawings and hereinafter described in the specification and pointed out in the claims.

In the accompanying drawings, Figure I represents a plan View of a portion of a gangframe with my improved spacing device applied thereto. Fig. II shows top plan view of my improved spacing device. Fig. III represents a central section of my improved device. Fig. IV shows my device held between the jaws of a gage in order to determine the size thereof.

Again referring to the drawings, a. represents a portion of a gang-frame of the usual construction. therein in the usual way, which allows them to move freely in the said frame in order that they may be spaced the required distance apart according to the width or thickness of the slabs which it is desired to out. Between each pair of saws at both ends of the frame is arranged one of my improved wedging and spacing devices 0. This device comprises 1) represents saws secured two thin plates 0 and 0 preferably formed of sheet metal. In the four corners of each of the plates 0 and 0 respectively, are formed bolt-holes c and 0 respectively. Between the plates 0 and c are arranged two blocks d and d. The top and bottom edges and the outer vertical edge of each of the blocks are square to each other. The inner vertical edge of each block forms an acute angle with the bottom edge of the block. Therefore when the two blocks are brought together the blocks will only touch at the lower inner corners, leaving a wedge-shaped space between their adjacent edges. In each block (1 and cl, near the top and bottom, are formed slots d and d respectively. These slots correspond in position to the bolt-holes c and 0 formed in the plates 0 and 0 The plates 0' and c are secured together by means of bolts oiwhich are passed through the bolt-holes c and c and through the corresponding slots d and d in the respective blocks 01 and d. In securing the plates 0 and 0 together the bolts c are tightened sufficiently to cause the inner face of the said plates to grip the said blocks 01 and (1, so as to normally hold them in any position in which they may be adjusted, while at the same time allowing the blocks d and d to be forced in and out between the plates. These bolts also limit the outward movement of the blocks.

e represents a wedge-shaped block equal in thickness to the blocks (1 and d. This block is arranged in the space between the adjacent faces of the blocks 01 and d and is used for forcing apart the blocks d and d, and thereby increasing the dimensions of the wedge c. A thumb-screw e is mounted in the plate a and is arranged to engage the wedge 6, so as to lock it in any position in which it may be driven. On top of the respective blocks d and d are arranged lugs d and d which rest on the backs of the saws and prevent the spacing device from slipping down between the saws of gang-frame.

f represents a measuring device or gage and comprises abase portion f,provided with a scale f At one end of the base f is arranged a stationary jaw f and-in the opposite end of the base f is formed a slot 7. On top of the base is mounted a movable jaw f A bolt f is arranged in the slot f, and its free end passes up through a hole formed in the jawf'. On the end of the bolt, above the jawf is secured a nutf The operation and use of my device are as follows: The jaws of the gagefare first spaced a distance equal to the dimensions of the Wedge desired-that is, equal to the distance which it is desired to leave between the respective saws in the gang-frame. The wedgeshaped block 6 is then withdrawn from the spacing device a, and the blocks 01 and cl are forced together by pressing on their outer edges. The device 0 is then placed between the jaws of the gage f, and the wedge-shaped block 6 is driven between the blocks 61 and cl, forcing them out until their outer faces or edges come in contact with the jaws of the gage. The thumb-screw e is then turned in, so as to lock the wedge e in its position. The pressure of the inner faces of the plates 0 and 0 against the blocks (1 and d prevents any outward movement of the said block While the device is being used.

What I claim is- 1. A new and improved device of the character set forth, comprising two plates, blocks secured between said plates and arranged to slide in and out between said plates and means for securing said plates together, substantially as described and for the purpose set forth.

2. A new and improved spacing device for saws, comprising two plates, blocks secured between said plates and arranged to slide in and out between said plates, means for forcing said blocks outward between said plates and means for limiting the outward movement of said blocks, substantially as described and for the'purpose set forth.

3. Anew and improved device for spacing saws in a gang-frame, comprising two plates, blocks arranged between said plates and adapted to slide in and out between said plates, means for forcing said blocks outward between said plates and means for supporting the device between the saws composing the gang, substantially as described and for the purpose set forth.-

4. A spacing device for use in spacing saws in a gang-fra me, comprising two plates,blocks secured between said plates and arranged to slide in and out between said plates, said blocks having their adjacent faces inclined and capable of touching only at their lower ends, a. wedge arranged between the said blocks and means for locking the said wedge between the said plates, substantially as described and for the purpose set forth.

5. Aspacing device for use in spacing saws in a gang-frame, comprising two plates,blocks arranged between said plates, said blocks having their adjacent faces inclined and capable of touching only at their lower ends, slots formed in said blocks, bolts passing through said slots and securing said plates together, a wedge arranged between the said blocks and a set-screw mounted in one of the said plates and adapted to engage the said wedge, substantially as described and for the purpose set forth.

In testimony whereof I sign the foregoing specification, in the presence of two witnesses, this 6th day of February, 1902, at Cleveland, Ohio.

FRANK YOST.

Witnesses:

VIoToR (J. LYNoH, DANIEL E. DALY. 

